文献类型：期刊文献

英文题名：Softwood-inspired chitosan-based sponge with a radial and centrosymmetric structure, superhydrophilicity and adsorption efficiency for microplastics removal in water

作者：Tang, Chen[1] Xu, Jingwen[1] Liang, Rongping[1] Xu, Jinmei[2] Li, Liping[1]

第一作者：Tang, Chen

通信作者：Li, LP[1];Xu, JM[2]

机构：[1]South China Agr Univ, Coll Mat & Energy, Guangdong Engn Technol Res Ctr Agr & Forestry Biom, Key Lab Energy Plants Resource & Utilizat,Minist A, Guangzhou 510642, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China

年份：2025

卷号：13

期号：3

外文期刊名：JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING

收录：;EI(收录号：20252018430259);Scopus(收录号：2-s2.0-105005027246);WOS:【SCI-EXPANDED(收录号:WOS:001471106500001)】；

基金：This work was financially supported by the Opening Project of Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture and Rural Affairs, P. R. China; and the Opening Project of Guangdong Engineering Technology Research Center for Agricultural and Forestry Biomass, P. R. China (IBE2024D06) and the National Natural Science Foundation of China (32471785 and 32371806).

语种：英文

外文关键词：Chitosan sponge; Microplastics; Freeze casting; Adsorption

摘要：Microplastics (MPs), an emerging contaminant resulting from exponential plastic production growth, present substantial threats to ecosystems and human health, necessitating the development of efficient and eco-friendly removal strategies. However, current MPs removal technologies are often limited by environmental incompatibility and operational complexity. To address these challenges, in this study, a chitosan-based sponge with superhydrophilic properties was developed for the rapid adsorption of polystyrene (PS) MPs, employing a facile and sustainable approach inspired by softwood's hierarchical structure. This innovative designed RCS-10 exhibited superior mechanical strength compared to irregular chitosan sponge (ICS-10) under 10 degrees C, with enhanced wet strength in aqueous environments. The sponge's unique anisotropic architecture enabled exceptional hydraulic performance, including instantaneous water droplet absorption (<0.2 s) and rapid directional transport of Congo red solution (30 s). Furthermore, RCS-10 achieved a high MPs adsorption capacity of 0.23 mg & sdot;g(-1), and its sustainability and stability were evidenced by the consistently high absorption efficiency maintained over 5 cycles. These findings highlight the potential of chitosan-based sponges as highly effective adsorbents for MPs removal in water, while also advancing the application of biomimetic and high-performance materials in alignment with green and circular development strategies.